Which statement is not correct for ultrasound and X-rays?
A Both can be refracted
B Both can be diffracted
C Both can be polarised
D Both can be reflected - AQA - A-Level Physics - Question 14 - 2017 - Paper 1
Question 14
Which statement is not correct for ultrasound and X-rays?
A Both can be refracted
B Both can be diffracted
C Both can be polarised
D Both can be reflected
Worked Solution & Example Answer:Which statement is not correct for ultrasound and X-rays?
A Both can be refracted
B Both can be diffracted
C Both can be polarised
D Both can be reflected - AQA - A-Level Physics - Question 14 - 2017 - Paper 1
Step 1
Both can be refracted
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Answer
Ultrasound can be refracted when it passes through mediums of different densities, which allows it to change direction. X-rays, while they can be attenuated, do not exhibit refraction in the same manner as ultrasound.
Step 2
Both can be diffracted
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Answer
Both ultrasound and X-rays can exhibit diffraction when passing through narrow openings or around obstacles. This behavior is characteristic of wave phenomena.
Step 3
Both can be polarised
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Answer
Ultrasound waves can be polarised, particularly as they are mechanical waves. However, X-rays, being electromagnetic waves, can also be polarised, making this statement true for both types of waves.
Step 4
Both can be reflected
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Answer
Both ultrasound and X-rays can be reflected off surfaces. This characteristic is crucial for their use in various imaging techniques.
